STW5098T datasheet(43/85 Pages) STMICROELECTRONICS

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Giải thích chi tiết về linh kiện	Dual low power asynchronous stereo audio Codec with integrated power amplifiers

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STw5098

Control registers

43/85

5.7

Digital audio interfaces

CR#

(hex)

Description

D7D6D5D4

D2D1

Def.

CR26

(1Ah)

DAC data IF

control

DAFORM(2:0)

DASPIM

DAWL(2:0)

0000

CR27

(1Bh)

ADC data IF

control

ADRTOL

ADFORM2:0)

ADSPIM

ADWL(2:0)

0000

CR28

(1Ch)

DAC&ADC data

IF control

AMCKINV

DACKP

DASYNCP

DAMONO

ADCKP

SYNCP

ADMONO

ADHIZ

0000

Table 20.

CR26 description

Bits

Name

Value

CR26 Description

Def.

6-4

DAFORM(2:0)

000

001

010

011

100

111

DA audio interface format selection

Delayed format (I2S compatible)

Left aligned format

Right aligned format

DSP format

SPI format

PCM format (uses left channel)

000

DASPIM

DA interface in SPI mode receives one word for both channels

DA interface in SPI mode receives two words

(alternated, left channel first)

2-0

DAWL(2:0)

000

001

010

011

100

DA interface word length

16 bit

18 bit

20 bit

24 bit

32 bit

000

Table 21.

CR27 description

Bits

Name

Value

CR27 description

Def.

7ADRTOL

AD right channel sent to PCM I/F (must set ENADCR=0 in CR1)

Normal operation

6-4

ADFORM(2:0)

000

001

010

011

100

111

AD audio interface format selection

Delayed format (I2S compatible)

Left aligned format

Right aligned format

DSP format

SPI format

PCM format (sends out left channel)

000

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